Primal Instincts or Dumb luck?

I think that getting pregnant and having a baby is a very cave people/ primal thing for so many women. It takes no thought or brain function at all. They get pregnant, have no problems, have a baby, and then have no idea what the hell to do with it. They say stupid shit like "I don't get it. My baby keeps trying to pick up anything he gets his hands on." Well, no duh that's what kids do! Hell at least animals like cats and dogs instinctively know what to do with a baby. Then there are those of us who work our asses off to get a child only for it to blow up in our faces over and over. Isn't that just peachy fucking keen.